Apparatus for cooling purposes



perforations or slits along s APP i a an, or nnvonron'r, AUCKLAND, new znanann.

res ron cooLme ruarosas.

Application filed Juno 7, 1922. Serial m. 566,666.

'is used. The introduction of ammonia from the usual compressor and condenser into a closed horizontally disposed cylinder through a perforated pipe therein whereby the cylinder 'is cooled and itself cools substances near or brought into contact with it and then drawing off by suction the vaporized ammonia back to the compressor are known. By such a device however it is found that a considerable; quantity of li uid ammonia collects in the lowest art 0 the cylinder and it takes considerab e time with the corresponding expense for wages and running machinery to remove it by the use of warm water in the usual way. By my invention the most of this expense 'is saved and the ammonia is used to better efiect and more completely. M invention has for its leading feature a rum adapted to be revolved within the cylinder above referred to and also provided with longitudinal blades specia ly arranged and adapted to pick or scoop up any 1i uid ammonia that ma find its way to the owest part of the cy inder and distribute it over the drum. A feature also is the introduction from the compressor and condenser of the ammonia b means of a small pipe laid within the cy inder close to the upper surface for the greater part of its length, such pipe having it preferably at the side. The drum is a o mounted preferably eccentrically within the cylinder. In the accompanying drawings illustrating the invention Figure 1 is a longitudinal section of'the apparatus and Figure 2 is a cross section of same. Referrin to these drawin s, there is a horizonta y disposed cylin er 6 having closed ends 3 and 16. Within this cylinder a revolving drum 7 is eccentricall mounted. One end of the drum is provi ed with an apertured plate 5 having a sleeve 4 rotating on a boss extending in wardly. from the plate 3. The other endof the drum is provided with an apertured plate 13 having a boss 14 "keyed to a shaft 18 which extends through a stufling box 17 provided on the plate 16; The plate 16 is secured to a flange at one end of the cylinder 6, as shown at 15. The shaft 18 is revolved by a driving pulley 19 driven by any suitable prime mover (not shown); An

apertured plate 11 is arranged within'the drum a short distance from one end of the same and it is provided with a boss 12 to support the inner end of the shaft 18.

A 'small inlet pipe 1 having saw cuts 9 at one side leads ammonia from the usual compressor (not shown within and to nearly the end of the cylinder and is located preferably near the inside upper surface thereof as shown. A suction pipe 2 operated inthe usual manner to draw out the vaporized ammonia back to. the compressor passes through a central outlet in the drum. This pipe 2 extends preferably half waywithin the drum 7 and has slots 8 at its inner end for the entry of the vaporized ammonia. Blades 10 are disposed lengthwise along the drum and are inclined from each end thereof downwards to the centre of the drum. In operation the ammonia from the compressor and condenser enters the cylinder 6 through the small inlet pipe 1 and is ejected therefrom throu h the slits 9 over.

the drum 7 which is revo ved by the driving pulley 19 and shaft 18 over which it is further spread by the blades 10. vaporized ammonia is drawn through the openlngs 5 at each end of the drum and through slots 8 and outlet pipe 2 back to the compressor in the usual way. Any liquid ammonia 1. A coolingapparatus including a closed casing, a distributing pipe extending into said casing and adapted to convey a 0901- ing medium to the interior of the casin a suction pi e for withdrawing the coo ing medium i rom the casin and a rotatable drum eccentrically mounte 1n the casing and are provided with blades for elevatin liquefied cooling medium which may a deposited in the lower portion of said casing.

2. A cooling apparatus as claimed in claim. 1 in which eachof said blades is tangentially arranged on the drum to facilitate lifting the liquid cooling medium.

3; A cooling apparatus including a hollow cylinder having closed ends, a pipe extending into said cylinder, extending along substantially the entire length of the interior of the cylinder and provided with perforations adapted to discharge a cooling medium into the cylinder, a suction pipe arranged eocentrically within the cylinder and adapted to permit withdrawal oi? the oool= ing medium from the cylinder, a shaft ro- 'a erae ei shaft, and inclined blades arranged on the I periphery of the dmlm and extending lengthwise of the latter for elevating any liquefied cooling medium. which may be deposited in the lower portion of said cylinder In testimony whereof he has afiixed his signature in presence of two witnesses.

WALTER HAMER. Witnesses:

Annnnw Jenn l ama LTLJAN FLEMING- 

